Composite steel claded mill liner

a technology of composite steel and mill liner, which is applied in the direction of instruments, foundry patterns, and moulding apparatus of foundries, can solve the problems of finer particles grinding, material individual limitations, and degradation of grinding media and drum liner, and achieve the effect of extending the wear life cycl

Inactive Publication Date: 2010-09-16
TEGA IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]Therefore, it is an object of the present of invention to provide a

Problems solved by technology

Attrition in the rock media charge also causes grinding of finer particles either present in the feed or gets generated in course of rock breakage in course of milling.
The significant impact forces generated during the operation of the grinding mills, due to continuous collision between the steel balls, ore and the inner shell liners of the rotating drum while comminuting the ore to finer particles also causing degradation of the grinding media and the liner of the drum.
However, the above various liner materials have their individual limitations and do not provide very satisfactory results so far as the desired life of liner is concerned against aggressive operating conditions

Method used

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  • Composite steel claded mill liner
  • Composite steel claded mill liner
  • Composite steel claded mill liner

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Embodiment Construction

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[0029]According to the invention, a symmetrically distributed soft rubber backing on a composite liner system, as shown in FIG. 1 is disclosed. The inside wall of the shell of the grinding mill, (1) is retrofitted with a rubber backed composite mill liner (3). The liner has a top layer made of cast steel. An example of the inventive liner is chrome-moly cast steel layer with integrated rubber back layer. Natural rubber can be used to make the rubber layer. These two layers make an integrated system of rubber backing and composite lining. The two layers are joined together by hot vulcanization in course of transfer moulding.

[0030]The inventive liner has done away with the present concept of fixing lifter bars on the shell. Instead the instant liner is an integrated single profile of bar or bars and plate or plates. Therefore, independent of any number of holes available in a row but depending only on the number of lifts required for a specific application individual profile can be d...

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Abstract

The invention discloses a composite liner for ball mills comprising an upper layer of alloy cast steel bonded on a symmetrically distributed lower rubber surface, said cast steel layer is prefabricated so as to form the desired profile on the upper surface of the said liner required for specific grinding operations. The present invention also discloses a method of manufacturing composite mill liner.

Description

[0001]This invention relates to an effective tool for grinding of ore minerals, rocks and other materials. Particularly, this invention relates to a liner to be used in the mill for grinding in course of mineral processing operations. More particularly, this invention relates to a composite steel claded mill liner for use in AG and SAG mills.BACKGROUND OF THE INVENTION[0002]Grinding mills are typical equipments for mineral processing as mentionea above. A standard grinding mill generally has a drum shaped shell connected to conical / vertical mill heads with integral or bolted trunnions and the assembly is mounted on the journal pad bearings for it's rotation. Semi-Autogenous Grinding Mill or SAG is a typical mill which unlike ball mills uses steel balls along with rock feed material as media to break the rocks in grinding operations. The rotating drum continuously throws the rocks and the balls in a cataracting motion causing breakage of the bigger rocks primarily by impact. Attritio...

Claims

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Application Information

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IPC IPC(8): B32B3/06B32B15/06B22D23/00
CPCB02C17/225Y10T428/26Y10T428/24008Y10T428/31678
Inventor GHOSH, SOMENATHSENGUPTA, KOUSHIK
Owner TEGA IND LTD
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